T, A, B = map(int, input().split())

dis = max(A, B)
ans = 'YES'
route = ''

if dis > T:
    ans = 'NO'

elif (A, B) == (0, 0):
    if T == 1:
        ans = 'NO'

    elif T % 2 == 0:
        route += '^\nv\n' * (T // 2)

    else:
        route += '^\n>\nv<\n'
        route += '^\nv\n' * ((T - 3) // 2)

elif A == 0:
    if (T - B) % 2 == 0:
        route += '>\n' * B
        route += '^\nv\n' * ((T - B) // 2)

    else:
        route += '>\n' * (B - 1)
        route += '^>\nv\n'
        route += '^\nv\n' * ((T - B) // 2)

elif B == 0:
    if (T - A) % 2 == 0:
        route += '^\n' * A
        route += '^\nv\n' * ((T - A) // 2) 
    else:
        route += '^\n' * (A - 1) 
        route += '^>\n<\n' 
        route += '^\nv\n' * ((T - A) // 2) 
else:
    if A > B:
        if (T - dis) % 2 == 0:
            route += '^\n' * (A - B) 
            route += '^>\n' * B 
            route += '^\nv\n' * ((T - dis) // 2) 
        else:
            route += '^\n' * (A - B) 
            route += '^>\n' * (B - 1) 
            route += '^\n>\n' 
            route += '^\nv\n' * ((T - dis) // 2) 
        
    else:
        if (T - dis) % 2 == 0:
            route += '>\n' * (B - A) 
            route += '^>\n' * A 
            route += '^\nv\n' * ((T - dis) // 2) 
        else:
            route += '>\n' * (B - A) 
            route += '^>\n' * (A - 1) 
            route += '^\n>\n' 
            route += '^\nv\n' * ((T - dis) // 2) 
        
print(ans)

if ans == 'YES':
    print(route, end = '')